[Webkit-unassigned] [Bug 111701] Basic child obscuration test for backgrounds

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=111701





--- Comment #15 from Simon Fraser (smfr) <simon.fraser at apple.com>  2013-03-11 13:58:01 PST ---
(From update of attachment 192545)
View in context: https://bugs.webkit.org/attachment.cgi?id=192545&action=review

> Source/WebCore/ChangeLog:26
> +            In case of multiple background layers the last one should determine background color clip.
> +            Tested by ietestcenter/css3/bordersbackgrounds/background_color_padding_box.htm

So why not testcase?

> Source/WebCore/rendering/RenderBox.cpp:1161
> +            if (!childBox->layer()->contentsOpaqueInRect(childLocalBackgroundRect))

You should sync up with Alok, who is working on reverting the change that added contentsOpaqueInRect() in bug 70634. It had issues with paint phases in its original use.

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